Fix parameter type of form builder dialogs' `successCallback` (#4069)
Fix parameter type of form builder dialogs' `successCallback` (#4069)

Close #4063
SoftCreatR/WCF,Cyperghost/WCF,Cyperghost/WCF,Cyperghost/WCF,SoftCreatR/WCF,WoltLab/WCF,Cyperghost/WCF,Cyperghost/WCF,WoltLab/WCF,WoltLab/WCF,SoftCreatR/WCF,WoltLab/WCF,SoftCreatR/WCF